Drinking-cup.



B. A. GRASBERGER.

DRINKING CUP. APPLICATION FILED IAN-27' 19 15.

Patented June 6, 1916.

UNITED STATES PATENT OFFICE.

BONIFACE A. G-RASZBERGER,'OF RICHMOND, VIRGINIA.

DRINKING-CUP.

Specification of Letters Patent.

Patented June 6, 1916.

Application filed January 27. 1915. a Serial No. 4,704.

This invention contemplates an improved drinking cup and has as itsprimary object to provide a device of this character employing aconstruction especially adaptedto the use of paper or other fibrousmaterial in the formation of the cup. I

The invention has as a further object in this connection to provide animproved cup having as it's salient feature, simplicity of construction,while at the same time, a thor-' oughly' efficient article will beproduced.

A still further object of the invention is to provide a cup soconstructed that the elements thereof may be readily formed, and whereinthe individual elements of the cup will be such, that but a minimumamount of stock will be wasted in forming the blanks providingthe saidelements, from the stock.

Other and incidental objects will appear as the description proceeds andin the drawings wherein I have illustrated the preferred embodiment ofthe invention and wherein similar reference characters designatecorresponding parts throughout the several views, a V

.Figure 1 is a perspective view of my improved cup. Fig. 2'isafragmentary sectional view illustrating the construction and mountingof the bottom wall of the cup. Fig. 3 is a view on a slightly reducedscale showing the blank from which the side wall of the cup is formed.Fig. 4 is a detail sectional view illustrating the manner in which. theside wall of the bottom of the cup is plaited or crimped to fit withinthe body of the cup. Fig. 5 is a fragmentary sectional view disclosingthe arrangement of the ad hesive receiving channels formed in the sidewall of the bottom of the cup, and Fig. 6 is a fragmentary sectionalview showing a slight ,modification in the mounting of the bottom of thecup.

In carrying out my invention, I employ a blank 10 which as best shown inFig. 3 of the drawings, is formed from a single piece of material. Theblank 10 may be struck from a piece of preferably paraffin paper stock,although Manila paper of itable character could also be employed, wheredesired.

It will be observed upon reference to Fig. 3 that the end edges of theblank 10 are stralght and uninterrupted and converge toward one sideedge of'the blankupon radial lines. The side edges of the blank are alsouninterrupted and are each defined by an are having a center common toboth.

Formed in the blank 10 adjacent one side thereof is an arcuate channelwhich is preferably pressed into the stock to provide a longitudinallyextending rib 11. The blank thus formed is rolled longitudi nally toform the substantially frusto conical body portion 12 of the cup, theend margins of the blank being arranged in overlapping relation as bestshown in Fig. 1 of the drawings and being adhesively connected to eachother or secured together in any suitable manner. It will be noted thatthe rib 11 is thus disposed adjacent the upon the side wall of the cupadaptedto engage the upper edge of an adjacent cup when several of thecups are nested.

Particular attention is now directed" to the fact that throughout theoverlapping portions of the side wall of the. cup, the shoulder providedby the rib 11 upon the inwardly disposed overlapping portion, is adaptedto engage within the channel formed by pressing the rib outwardly, aspreviously referred to, of the outwardly disposed overlapping portion.As will be clear, such engagement of the shoulder within the channel atthe point mentioned will efiectually counteract any t ndency of theoverlapping ends of the side wall to shift relative to each other in avertical plane, and will coact with the adhesive securing theoverlapping ends together, for providing an eflicient and rigidstructure. The bottom similar vto that employed in forming" the body ofthe cup. As will be readily seen, upon reference to Fig. 2 of thedrawings, the blank providing the bottom wall 13 pre vious to being bentas shown therein, is substantially circular, and adjacent its periphery,is bent laterally to provide an ancontour. Formed in the upper freemargin of the side wall 1 1 are superposed series of circumferentiallyextending reversely 'presented inner and outer plaits designated 15 and16 respectively, which extend vertically of the said side wall, and, asbest shown in Fig. 2 of the drawings, taper in widthjas they approachthe bottom wall 13, the individual plaits of each seriesbeing arrangedin staggered relation to adjacent plaits of the other series.

In this connection, particularattention is directed to Fig. 4 of thedrawings wherein the construction and arrangement of the plaits 15 and16 are particularly shown. It will be noted that each plait of the innerseries of plaits 15 has its longitudinal side walls arranged in spacedrelation to the confronting ends of adjacent plaits of the said seriesand merges, at its sides, with the sides of adjacent superposed plaitsof the outer series of plaits 16. As in the case of the inner series ofplaits 15, the individual plaits of the outer series of plaits 16 arealso preferably each arranged with their sides disposed in spacedrelation to the confronting ends of adjacent plaits of the said outerseries. By this arrangement, the wall 14 adjacent the upper marginthereof is made expansible whereby the circumference of the said wall,throughout the greater portion of its length may be either increased ordiminished and attention is called to the fact that each individualplait of the inner series of plaits 16 in connection with theconfronting ends of adjacent superposed plaits of the outer series ofplaits 16, provide vertically arranged channels 17 tapering in widthtoward the bottom wall 13.

As best shown in Fig. 2 of the drawings, the series of plaits 15 and 16respectively merge at the lower extremities thereof, into the inner andouter surfaces of the side wall 14, to provide, upon the outer face ofthe cup and adjacent the bottom wall 13, an annular substantially smoothand uninterrupted bearing surface 18.

The bottom of the cup is preferably arranged within the smaller end ofthe body portion 12 as shown in Fig. 2 of the drawings and the outsidediameter of the bottom wall 13 is such that the bottom of the cup willfit snugly within the side wall thereof to frictionally engage the innerface of said wall, the bottom wall 13 being preferably arranged in aplane with the bottom edges of the body of the cup, with the side wall14 flaring outwardly to seat against the said side wall adj acentthelower margin thereof.

Particular attention is now directed to the fact that the bearingsurfacelS of the side wall It will have uninterrupted engagement withthe inner face of the side wall of the cup and will thus close thechannels 17 at their lower ends. It is further to be noted that theinner and outer series of plaits 15 and 16 may be expanded or contractedso that the wall 14 will yieldably engage against the side wall of thecup to thus pro vide an effective closure. Previous to so disposing thebottom of the cup within the body portion thereof, the outer faces ofthe outwardly disposed series of plaits 16, are coated with paste orother suitable adhesive while the channels 17 are preferably entirelyfilled with such adhesive. Thus, when the bottom of the cup is appliedas just above described, the adhesive within the channels 17 will beheldtherein through the engagement of the bearing surface 18 eter greaterthan the diameter of the cup taken in a plane with the upper edge of thewall 14. Consequently, when the bottom of the cup is disposed inposition, the spaced confronting edges of the inner series of plaitswill be moved toward each other, and this will also occur in connectionwith the outer series of plaits 16. The wall 14 will thus adjust itselfto the diameter of the cup in a plane passing through the said wall andwill therefore, being vthus expansible, compensate for any unevennessesin the side wall of the cup adjacent the lower end thereof.

When the outer series of plaits 16 are thus moved toward each other asjust above described, the width of the channels will be correspondinglydecreased so that the adhesive contained within the said channels willbe forced outwardly against the contiguous. portions of the inner faceof the side wall of the cup to thus efiectually secure the bottom wallin position, it being In Fig. 5 of the drawings, I have illustrated aslight modification of the invention which consists in reversing thedisposition of the bottom 13 of the cup from that shown in Fig. 2.Otherwise, the elements of the cup are con tructed n. the sa e manne asabove described with reference to the preferred form of the inventionand will also coact in a similar manner to produce the finished article.

It, will therefore be seen that I provide an exceedingly simple anddesirable construction wherein to produce the cup. but two separateelements are employed which are so formed and arranged as to provide athoroughly eflicient article of manufacture.

Having thus described my invention, what I claim and desire to secure byLetters Patent is g An article of the character described including abody portion. and a closure fitted within the body portion and providedwith a securing wall having one margin thereof plaited to form a seriesof adhesive receiv- BOXIFACE A. GRASBERGER.

'itnesses ISRAEL RHODES,

P. E. CLARK.

